修复bug

manual_trading_hub/scripts/run_agent.sh

@@ -20,6 +20,9 @@ if [[ ! -x "${VENV_PY}" ]]; then
 fi
 
 if [[ -f .env ]]; then
+  if grep -q $'\r' .env 2>/dev/null; then
+    echo "警告: $(pwd)/.env 含 Windows 换行(CRLF)，请在仓库根执行: bash manual_trading_hub/scripts/fix_env_crlf.sh" >&2
+  fi
   if ! load_dotenv_file ".env"; then
     echo "错误: $(pwd)/.env 加载失败" >&2
     exit 1